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Title: Zero-field magnetic response functions in Landau levels

Here, we present a fresh perspective on the Landau level quantization rule; that is, by successively including zero-field magnetic response functions at zero temperature, such as zero-field magnetization and susceptibility, the Onsager’s rule can be corrected order by order. Such a perspective is further reinterpreted as a quantization of the semiclassical electron density in solids. Our theory not only reproduces Onsager’s rule at zeroth order and the Berry phase and magnetic moment correction at first order but also explains the nature of higher-order corrections in a universal way. In applications, those higher-order corrections are expected to curve the linear relation between the level index and the inverse of the magnetic field, as already observed in experiments. Our theory then provides a way to extract the correct value of Berry phase as well as the magnetic susceptibility at zero temperature from Landau level fan diagrams in experiments. Moreover, it can be used theoretically to calculate Landau levels up to second-order accuracy for realistic models.
 [1] ;  [2]
  1. Univ. of Texas, Austin, TX (United States). Dept. of Physics
  2. Univ. of Texas, Austin, TX (United States). Dept. of Physics; Peking Univ., Beijing (China). International Center for Quantum Materials
Publication Date:
Grant/Contract Number:
FG03-02ER45958; 2013CB921900; EFMA-1641101; F-1255
Published Article
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 114; Journal Issue: 28; Journal ID: ISSN 0027-8424
National Academy of Sciences, Washington, DC (United States)
Research Org:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF); National Basic Research Program of China (NBRPC); Welch Foundation
Country of Publication:
United States
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Landau level; magnetic susceptibility; Berry phase; Hofstadter butterfly; topological insulator
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1418601